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7 changes: 3 additions & 4 deletions docs/cpp/compiler-limits.md
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---
description: "Learn more about: Compiler Limits"
title: "Compiler Limits"
ms.date: "05/06/2019"
ms.date: "06/05/2023"
helpviewer_keywords: ["cl.exe compiler, limits for language constructs"]
ms.assetid: f1fa59c6-55b4-414b-80c5-3df72952160d
---
# Compiler Limits

The C++ standard recommends limits for various language constructs. The following is a list of cases where the Microsoft C++ compiler does not implement the recommended limits. The first number is the limit that is established in the ISO C++ 11 standard (INCITS/ISO/IEC 14882-2011[2012], Annex B) and the second number is the limit implemented by the Microsoft C++ compiler:

- Nesting levels of compound statements, iteration control structures, and selection control structures - C++ standard: 256, Microsoft C++ compiler: depends on the combination of statements that are nested, but generally between 100 and 110.

- Parameters in one macro definition - C++ standard: 256, Microsoft C++ compiler: 127.
- Parameters in one macro definition - C++ standard: 256, Microsoft C++ compiler using `/Zc:preprocessor-`:127 or using `/Zc:preprocessor`:32767.

- Arguments in one macro invocation - C++ standard: 256, Microsoft C++ compiler 127.
- Arguments in one macro invocation - C++ standard: 256, Microsoft C++ compiler using `/Zc:preprocessor-`:127 or using `/Zc:preprocessor`:32767.

- Characters in a character string literal or wide string literal (after concatenation) - C++ standard: 65536, Microsoft C++ compiler: 65535 single-byte characters, including the NULL terminator, and 32767 double-byte characters, including the NULL terminator.

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